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ntp 4.2.6p5

    1: Problem with recent ANSI compilers
    2: 
    3: On some systems, including AIX, the compiler quits on the ntp_refclock.c
    4: file when processing the refclock_report() routine. The problem, which
    5: is eithre a feature or a bug, has to do with an unwanted promotion of
    6: the u_char argument to an int and a failure of the compiler to recognize
    7: the preceding prototype. A workaround is to use ANSI syntax to delare
    8: the arguments. Since ANSI compilers are not universally available, this
    9: syntax can't be used in the stock distribution.
   10: 
   11: (Message # 60: 2884 bytes, New)
   12: Date: Sat, 19 Aug 1995 13:20:50 -0400
   13: From: "R. Bernstein" <rocky@panix.com>
   14: Newsgroups: comp.protocols.time.ntp
   15: to: mills@udel.edu
   16: return-receipt-to: rocky@panix.com
   17: Subject: time and AIX 3.2.5 raw tty bug
   18:  
   19: This posting isn't strictly about NTP, any program that may stop the
   20: clock or set the clock backwards is subject to the AIX 3.2.5 bug.
   21:  
   22: On AIX 3.2.5, there is a bug in the tty driver for a raw device which
   23: may crash the box under certain conditions: basically a read() on a
   24: raw tty in effect, a character was read but not as many as specified
   25: by VMIN when a read timeout occurred. VTIME specifies the timeout. See
   26: the AIX manual page on termios.h or that include file. for Information
   27: on VMIN (or MIN) VTIME (or TIME).
   28:  
   29: A remedy other than to not use raw tty's is to apply patch U435110.
   30:  
   31: Details of the problem report follow.
   32:  
   33: > ABSTRACT:
   34: > IX43779: TRAP IN PSX_TIMEO
   35: >
   36: > ORIGINATING DETAILS:
   37: > Stacktrace shows:
   38: > IAR:      01460214   posixdd:psx_timeo  + 8bf4: ti 4,r12,0x0
   39: > *LR:      014601a0   posixdd:psx_timeo  + 8b80
   40: > 00212c60: 014604f4   posixdd:psx_timer  + 8ed4
   41: > 00212cc0: 0144b74c   ttydd:tty_do_offlevel  + 4284
   42: > 00212d20: 000216fc  .i_offlevel + 8c
   43: > 00212d70: 00021d78  .i_softint + c8
   44: > 00001004: 00008714  .finish_interrupt + 80
   45: >
   46: > RESPONDER SUMMARY:
   47: > AIX asserted in psx_timeo(). Reason for the assert was that
   48: > the current time was behind psx_ctime. Since this state
   49: > can occur when the current time is changed after a character
   50: > is received but before the VTIME interbyte timer pops, we
   51: > should not assert on this.
   52: >
   53: > RESPONDER CONCLUSION:
   54: > Removed the requirement that current time > psx_ctime by
   55: > adding a new L_ntimersub macro that is used instead of the
   56: > ntimersub macro in time.h. Also added a test for (current
   57: > time - psx_ctime) being negative, in that case we do not
   58: > adjust the new timeout.
   59: >
   60: > Reported to Correct a PTF in Error:     NO
   61: > Reported as a Highly pervasive problem: NO
   62: >
   63: > PE Apar?:       NoPE
   64: > Hiper Apar?:    NoHiper
   65: > Status:         CLOSED  PER
   66: > Component Name: AIX V3 FOR RS/6
   67: > Version:        320
   68: > Component ID:   575603001
   69: > Submitted:      94/05/03
   70: > Closed:         94/05/05
   71: > ChangeTeam:     TX2527
   72: >
   73: > APAR FIXED BY:  U431696  U432151  U432844  U432870  U432979
   74: > U433049  U433081  U433459  U433876  U433906  U434598  U434453
   75: > U434672  U434737  U435110
   76: